Britishvolt owner blames business woes on tax officials, media and 'sabotage' by staff / Britishvolt owner reportedly faces legal action over unpaid wages / Britishvolt owner faces legal action over unpaid wages / Britishvolt staff warn battery start-up may be trading while insolvent / Britishvolt aims to supply batteries to Australian military / Britishvolt buyer hasn't made final payment, administrators say